Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fa7721f58b84166…

MALICIOUS

PDF

105.6 KB Created: 2020-08-09 15:59:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cf3333487e82a6a82dd2408db941b8f SHA-1: 59ec51409ae792f6c9d35807bc4b9f6fe8ab28f3 SHA-256: 8fa7721f58b84166608ec12b584a8c5be788f4039dd27273a99097325472987e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.001 Malicious Link

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to 'ttraff.ru', a known malicious redirector. This suggests a link farm or SEO poisoning tactic to distribute malware. The document body, though heavily obfuscated, contains the target URL, indicating an attempt to trick users into downloading or accessing malicious content.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=captain+america+comics+1+pdf
    • http://files.keithrobertson.org/uploads/1/3/0/9/130969352/mavumamurokil_jevala_nikemav_gomunofibu.pdf
    • http://files.kaseymartinez.com/uploads/1/3/0/9/130969525/ac69572df.pdf
    • http://files.ldsstrangite.com/uploads/1/3/1/4/131437930/fca331c2b0.pdf
    • http://files.candlerock.org/uploads/1/3/1/3/131384424/5554214.pdf
    • http://files.capitalcitycupsc.com/uploads/1/3/1/3/131380163/xaligoganefupi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1534434062.pdf
    • https://cdn.shopify.com/s/files/1/0437/9521/8594/files/uremic_syndrome.pdf
    • https://cdn.shopify.com/s/files/1/0434/9761/9621/files/metallurgical_thermodynamics_ahindra_ghosh_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/9254/8515/files/medical_fitness_certificate_format.pdf
    • https://cdn.shopify.com/s/files/1/0436/0732/6882/files/31865473607.pdf
    • https://cdn.shopify.com/s/files/1/0429/2309/8279/files/jujitosekulisibedope.pdf
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/digotigojemajodonidali.pdf
    • https://cdn.shopify.com/s/files/1/0433/0101/1614/files/koteros.pdf
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/business_plan_for_startup_business_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/7495/3120/files/kawurivugivegu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4135/7977/files/42819348993.pdf
    • https://cdn.shopify.com/s/files/1/0430/0200/3609/files/traditional_cinderella_story.pdf
    • https://cdn.shopify.com/s/files/1/0429/5216/3481/files/90578443541.pdf
    • https://cdn.shopify.com/s/files/1/0440/1859/8038/files/jiniv.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000163eb.bin
476d6838b1074d54ac5cb17457c5937a9c20487cf7d9899b505a8bb3bd4c88b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x163EB 5228 bytes
font_01_sfnt_off0001759e.bin
d91b59dc8d007206ffa85c3dc6133973cdd581cac7da41a34aec638ef9d36c4b
pdf-font-stream PDF embedded font (sfnt) at offset 0x1759E 10388 bytes